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Why do you need SZ Stranding Line and exactly what can it do for you If you have ever seen a telephone company technician working on the phone jump box outside your house, you should have noticed an exclusive handheld phone like instrument. The technician uses it to recognize the incoming telephone wires by tapping onto the wires and listening for a tone. Once he finds the correct wire, he connects the wire into your house.

During fiber optic network installation, maintenance, or restoration, additionally it is often required to identify a specific fiber without disrupting live service. This battery powered instrument seems like a long handheld bar and is also called fiber identifier or live fiber identifier.

So how exactly does it work? There is a slot on the top of a fiber optic identifier. The fiber under test is inserted to the slot, then the fiber identifier performs a macro-bend on the fiber. The macro-bend makes some light leak out of the fiber as well as the optical sensor detects it. The detector can detect both the existence of light and the direction of light.

A fiber optic identifier can detect “no signal”, “tone” or “traffic” plus it indicates the traffic direction.

The optical signal loss induced by this strategy is so small, usually at 1dB level, that it doesn’t cause any trouble on the live traffic.

What kind of Fiber Drawing Machine will it support? Fiber optic identifiers can detect 250um bare fibers, 900um tight buffered fibers, 2.0mm fiber cables, 3.0mm fiber cables, bare fiber ribbons and jacketed fiber ribbons.

Most fiber identifiers have to change a head adapter so that you can support all these types of fibers and cables. While many other models are cleverly designed and they also don’t have to alter the head adapter at all. Some models only support single mode fibers as well as others supports both single mode and multimode fibers.

Precisely what is relative power measurement? Most high end fiber optic identifiers come with a LCD display which could display the optical power detected. However, this power measurement cannot be used as a accurate absolute power measurement of the optical signal as a result of inconsistencies in fiber optic cables and also the impact of user technique on the measurements.

But this power measurement can be used to compare power levels on different fiber links which may have same form of fiber optic cable. This relative power measurement has many applications as described below.

Sample applications

1. Identification of fibers

The relative power reading may be used to assist in the identification of the live optical fiber.There are many tests which can be performed to isolate the preferred fiber cable from a team of fibers without taking down the link(s). Three methods that could be used include comparing relative power, inducing macrobends, and varying the optical power of the source. No single technique is best or necessarily definitive. Using one or a combination of these methods may be required to isolate the fiber.

2. Identification of high loss points

Fiber optic identifier’s relative power measurement capability could be used to identify high loss point(s) in a duration of fiber. By taking relative power measurements along a section of optical fiber that is suspected of having a high loss point for instance a fracture or tight bend, the modification in relative power indicate point may be noted. In case a sudden drop or increase in relative power between two points is noted, a high loss point probably exists between the two points. The user are able to narrow in on the point if you take further measurements between the two points.

3. Verify optical splices and connectors

Fiber optic identifier may be used to verify fiber optic connectors and splices. This test must be performed on the lit optical fiber. The optical fiber can be carrying a transmission or perhaps be illuminated utilizing an optical test source. Attach fiber identifier to one side in the optical connector/splice. Read and record the relative optical power. Repeat the measurement on the second side from the connector/splice. Take the distinction between the reading on the second side and the first side. The real difference needs to be roughly comparable to the optical attenuation of the optical connector/splice. The measurement may be taken repeatedly and averaged to boost accuracy. When the optical fiber identifier indicates high loss, the connector/slice may be defective.

Fiber optic splice closure will be the equipment employed to offer room for fusion splicing optical fibers. Additionally, it provides protection for fused fiber joint point and fiber cables. You can find mainly two types of closures: vertical type and horizontal type. A large collection of fiber splice closures are equipped for different applications, including aerial, duct fiber cables and direct burial. Most of the time, they are usually used in outdoor environment, even underwater.

Fiber Optic Splice Closure Types . For outside plant splice closure, there are two major types: horizontal type and vertical type.

1) Horizontal type – Horizontal type splice closures seem like flat or cylindrical case. They whzqqc space and protection for optical cable splicing and joint. They could be mounted aerial, buried, or underground applications. Horizontal types are used more often than vertical type (dome type) closures.

Most horizontal fiber closure can accommodate hundreds of Secondary Coating Line. They are created to be waterproof and dust proof. They could be found in temperature ranging from -40°C to 85°C and may accommodate as much as 106 kpa pressure. The cases are usually made from high tensile construction plastic.

2) Vertical Type – Vertical type of fiber optic splice closures appears like a dome, thus they are also called dome types. They satisfy the same specification since the horizontal types. They are equipped for buried applications.